FlashCanvas is a JavaScript library which adds the HTML5 Canvas support to Internet Explorer. It renders shapes and images via Flash drawing API. It supports almost all Canvas APIs and, in many cases, runs faster than other similar libraries which use VML or Silverlight.

FlashCanvas provides a fairly accurate emulation of HTML5 Canvas to Internet Explorer. We performed a conformance testing of FlashCanvas by using a canvas test suite developed by Philip Taylor. The result revealed that FlashCanvas Pro 1.5 passes 72% of the tests, and the score rises to 78% when an experimental version of flashcanvas.js is used. This score is comparable to the score of other major browsers.